Trig help. I'm kinda stumped...?

Question

use the given function value[s] below, and trig identities [including cofunction identities] to find the indicated trig functions.

sin 60 = square root of 3/2, cos 60 = 1/2

[a] tan 60
[b] sin 30
[c] cos 30
[d] cot 60

yes please help and kindly explain them for me?

Answer 1

[a] tan60 = sin60/cos60 = ((√3)/2)/(1/2) = √3
[b] sin30 = cos(90 - 30) = 1/2
[c] cos30 = sin(90 - 30) = (√3)/2
[d] cot60 = 1/tan60 = 1/√3 = (√3)/3

Here's the pic:

http://s236.photobucket.com/albums/ff177/jsardi56/?action=view¤t=30-60-90-10-11-07.jpg

Answer 2

You are out.